/*
 * Copyright (C) 2014 The Android Open source Project
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <search.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

void *lfind(const void * __restrict key, const void * __restrict base,
           size_t *nmemb, size_t size,
           int (*compar)(const void *, const void *)) {
  size_t cnt = *nmemb;
  intptr_t ptr =(intptr_t) base;
  
  while(cnt--) {
    if (0 == compar(key, (const void*) ptr))
      return (void*) ptr;
    ptr += size;
  }  
  return NULL;
}

void *lsearch(const void * __restrict key, const void * __restrict base,
             size_t *nmemb, size_t size,
             int (*compar)(const void *, const void *)) {

  size_t cnt = *nmemb;
  intptr_t ptr = (intptr_t) base;

  while(cnt--) {
    if (0 == compar(key, (const void *) ptr))
      return (void*) ptr;
    ptr += size;
  }
  memcpy((void *) ptr, key, size);
  *nmemb += 1;
  return (void *) ptr;
}
